1 Port IP Video Encoder Advanced multi-streaming-rate real-time H.264, Motion JPEG at D1 resolution 1 Analog video inputs (BNC) and 1 alarm input & outputs Audio input and output, RS485/232, PTZ control 24MB pre-/post-event recording buffer per port USB 2.0 port and SD slot for storage/wireless network card Integrated Power-over-Ethernet (802.3af), optional antenna for wireless network SIP/VoIP support for two-way audio communications and video streaming to mobile phones and video phones Combine with GSurf software to support remote viewing, controlling and recording of up to 36 cameras from anywhere on the Internet or corporate network.